Expansion card#8077 ([Unknown] ATBUS-4B) has been dissociated from Chip#5490 (NEC uPD765 (Floppy Controller) [WD37C65, FDC37C65, Z765A, Z0765A, GM82C765B, \*765\*, 8272A, UM8272A, P82C765]) by helencroft

Expansion card#8077 ([Unknown] ATBUS-4B) has been associated to Chip#6406 (National Semiconductor DP8473 (Floppy Controller) [DTC-403]) by helencroft